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Last July, an article was published in medical journal Blood, which described the success of a cell gene therapy modality to treat the immunodeficiency caused by adenosine deaminase deficiency – “Bubble boy” disease. This is a disease that alters purine...

They had overcome the obstacle of using human embryonic stem cells, but that even so, a ethical difficulty remained with the producing organs formed almost entirely of human cells in experimental animals. It seems a little excessive that, in less than two months, we have...